Geoege w



y(No Model.)

G. W. BAKER.

FRIGTION CLUTCH.

N5. 285,725. Patented sept. 25, 188s.

f 202.22 2- 2% i WW UNITED STATES" PATENT OFFICE.

GEORGE W. BAKER, OF CLEVELAND, OHIO, ASSIGNOR TO THE WHITE SEWING MACHINE COMPANY, OF SAME PLACE.

FRlCTlON-CLUTCH.

SPECIFICATION forming part of Letters Patent No. 285,725, dated September 25, 1883.

Application filed May 3, 1883; (No model.)

To. all whom, it may concern:

Beit known that I, GEORGE W. BAKER, of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Friction-Clutches; and I do hereby declare the following to be a full, clear, and exact description ofthe inven` o'f a ily-wheel to a sewing-machine with nlyA new-devised clutch attached; Fig. 2 is a sectional view of the fly-wheel, clutch, and a driving-shaft. Fig. 3 is a detailed side View of the clutch. 4

A represents the ily-wheel, B the drivingshaft, C the clutch, and e a thumb-screwwith a tapering screw end for expand-ing the rim of clutch.

The clutch C consists of a riIn, a hub, e', and a single arm, e, connecting the rim with the hub. The riIn of the clutch is severed on the side opposite the said arm, and has at this point a hole provided with a thread suitable for receiving the end of the thumb-screw e. The hub e is tted to the shaft B, and held frIn in its position on the shaft by the setscrew b. The periphery of the rini of the clutch is Itted to a recess in the wheel A, as shown at a, but is made of a diameter that is a fraction smaller than the diameter of the said recess.

The operation of my device is as follows: When the thuInb-screw e is screwed into the hole in the side of the riIn of the clutch,it forces apart the severed ends of the rim, and causes the riIn to expand in such a manner as to engage the periphery of the recess in the wheel A, thereby causing the said wheel, clutch, and shaft to revolve together. By loosening the thunib-screw e the riIn of the clutch will by its own elasticity regain its former position, thereby leaving the wheel A free to revolve on the shaft without turning the shaft or clutch.

What I claim is- The combination, with a wheel or pulley having a recess formed in one side thereof, of a friction-clutch constructed with a hub, a single spoke or arln, an elastic riIn severed at a point opposite the arm or spoke, the severed ends being provided with screw-threads, and a tapering screw for expanding the riln ofthe clutch, substantially as set forth.

In testimony whereof I sign this specification, in the presence of two 27th day of April, 1883.

GEORGE w. BAKER.

Vitnesses:

C. DCRER, ALBERT E. LYNCH.

witnesses, this 

